In this paper,the old air conditioning system of an office building is renovated,two kinds of renovation schemes of water chillers and multi-split units are compared,and the influence of staff overtime on system selection is discussed.Firstly,the load simulation of the building renovation area is carried out,and the equipment selection is carried out for each scheme.Then,the energy consumption of the HVAC system of the two schemes in the cooling and heating seasons is simulated and compared.The multi-split system has lower energy consumption and the payback period is only 4.6 a.Finally,based on the simulation analysis of different overtime modes and overtime rates,the curve of energy consumption and overtime rates is drawn,and it is found that the multi-split system is more suitable for the buildings with overtime work.When the overtime rate of the independent office is 10％,the energy consumption of the multi-split system in the cooling season is 41.7％lower than that of the water chiller system.
维普
万方数据